Tension-device for yarn.



H. F. G?? MAN TENSION DEVICE FOR YARNl APP acm'lom FILED e naar caricia'.

HORACE F. GRUMAN, OF JACK$O1\T, MIQQHIGAN, ASSIGNOR O E ONE-THIRD TO D. E. GHEN AND ONE-THIRD TO. E., GQHEN, BOTH 0F DETROIT, ].'IICHG-AN.

TENSIN DEVICE FOR YARN.

Specification of Letters Patent.

Yatented @cth 16, 191'?.

To all Nio/u t may concer/n:

lio it known that I, HORACE F. GRUMAN, a citizen ot' the United States, residine' at Jackson, in the county ot' Jackson and State of Michigan, have invented certain new and useful Improvements in Tension Devices for Yarn, of which the following is a speciioation.

My invention consists of an improved tension device for yarn. One object of my invention is to provide a tension device of the above mentioned type that can be worn upon the finger, and which will be particularly 'adapted for use by ladies while tatting,

knitting, or crocheting.

`Another object is to so construct my 1nvention that it can be easily held upon the finger and will keep the yarn under an Aeven tension.

A further object is to so constrnctsrny in. vcntion that the yarn can be easily placed thereinA and will not accidentally pull out after once inserted.

A still further object is to so construct my improved dev ice that the degree of tension on the yarn can be easily varied and so that yarns ot' various thicknesses can be used in connection therewith.

'i\nother object is to so make my inven-v tion that it will be durable, ncaa-light in weight, and of simple construction.

These objects' and other advantageous ends which will be described hereinafter, I attain in the following manner, reference being had to the accompanying drawings in whichq Figure 1 is a perspectiveiview of my invention.

Fig. 2 is a top plan view drawn on an enlarged scale.

Fig. 3 is a section on the line 3--3 of AFig. 2. i

Fig. 4 is a section on the line 4-4 of Fig. 2. V y

`Referring to the drawings, 1 is a ring preferably made of metal, split at 2 permit` ting expansion to Et ngers of various sizes. An extension 3 projects beyond the ring 1' in the direction of its width, and a portion which is preferably made integral with the' extension 3, is spaced above the extension 3 and top of the ring 1.

The portion 4 has a turned 'ed e 5, and registering threaded holes 6 and are respectively formed in the turned edge 5 and portion 4: to receive an adjusting screw 8. A spring 9, preferably made of sheet metal, has an edge soldered or otherwise suitably secured adjacent the intersection of the extension 3 and the portion 4. (see Fig. 3).

The spring 9 has a portion 10 which is normally raised free of the upper surface of the extension 3 and upper surface 12 or" the ring 1.` Furthermore, the spring 9 is positioned directly below the rlower end of the adjusting screw 8, so that an inward movement of the screw 8 will torce the spring 9 toward the extension 3 and surface 1:2. of the ring 1.

The spring 9 has -a wide end 13 directly above the surface 12 of the ring 1 and this end 13 has elongated notches 14 and 15. These notches extend inwardly at angles to the edge 1G and the inner ends o1 the notches 14 and 15 have curved recesses 17 and 1S respertively into and out ot `which the yarn 19 passes (see Figs. 1, Q, and

It will be noted that by the angnlar disposition of the elongated notches 102 and 15 as shown in ll Q, vertical planes passing through each of said notches will intersect the axis of the ring l at an angle other than ninety degrees (90), thus any mov(L ment of the device upon the finger during the operation ot the yarn will not cause the yarn to slip out of the recessed portion ot' the notches, since a movement of 'the device is naturally in the direction of the axis of the ring' or substantially so. ln anyT event, however, the fact that the yarn passing between the recessed portions 17 and 18 eX- tends at an angle other than ninety degrees (90") to the notches, will prevent the yarn from accidentally working out of the notches.

The yarn as above noted passes in and out of the recesses 17 and 18 and also between the lower iace oi the sprin 9 and the surface 1Q. so that by longitudinal adjustment of the screw 8, various degrees or" pressure may be applied to the yarn between the spring 9 and the said surface 12 of the l ring 1.

,i By forming the portion 5 as above noted, a slight resilient action is attained between the turned edge 5 and the portion e, and since each of the holes 6 and 7 is screwthreaded and the turned edge 5 naturally tends to move slightly away from the portion 1, the screw 8 will be locked against accidental rotation, thus preventing the loosening of the tension. Furthermore, l preferably maire the surface 125 slightly liet f' to provide relatively large area for eiisgagenient oit the yarn ifi device inade in accordance with the above description will be extremely pract'n .l in use, since it can be readily held upon Ithe tingen, and the yarn as it is drawn therethrough by the take-up in the fabric being produced, will be under even tension, thus securing a greater perfection in the work.

*vl/'hilo lv have described my invention as taking a particular form, it will be understood that the various parts of my invention :nay be changed without departing from the spirit thereof, and hence l do not limit Inyseli to the precise construction set forth, but consider that am at liberty to malte such changes and alterations as fairly come within the scope of the apwnded claims.

Having thus described my invention, what l claim. as new and desire to secure by Letters atent is :9

l. A tension device including a ring, a part lined thereto and having a portion spaced from the outer surface oi the ring, a spring interposed between said portion and the ring, said portion having a` threaded hole 'therein and a turned edge, said turned edge having a. threaded hole, and a screw fitting said holes and designed to engage said spring, substantially as described.

2. A tension device including a ring, a part fixed thereto and having a portion spaced from the outer surface ot the ring, a spring interposed between said portion and the ring, an adjusting screw n'iounted in said portion and having an end adapted ior cngageinent with the spring to push the spring toward the ring, said .pring having an end portion provided with notches, said notches being included in planes extending at an anvgie to the axis of the ring, substantially as described.

3. A tension device including a ring, a part fixed thereto and having a portion spa-ced from the outer surface of the ring, a spring interposed between said portion and the ring, an adjusting screw supported in said portion for engageu'ient with1 the spring to push the spring toward the ring, said spring having an ond portion provided wi h notches, said notches being included in rplanbes ex,- tending at an angle to the axis of the ring, cach of said notches having an hda1-ged recess at its inner end, substantially as described.

4L. A tension device including a ring having a part extending therefrom, said part having a portion spaced therefrom and above the ring, a spring secured between said extending part and said spaced portion, an adjusting screw supported by said portion and designed to move the spring toward the outer surface or the ring, substantially as described.

5. A tension device including a ring, a part ixed thereto and having a portion spaced from the outer surface of the ring, a spring interposed between said portion and the ring, and an adjusting screw mounted in said portion and having an end adapted to engage with the spring to push the spring toward the ring, said spring having an end portion provided with notches, substantially as described.

In testimony whereof 1 have signed my name to this specification in the presence of two subscribing Witnesses.

HURACE F. GRUMAN. 1Witnesses:

RAY L. HEWLETT, y DAVID R. COHEN. 

